Beastlike Sex After the Aphrodisiac

Juhwan: "...Conditions...?"

So-jin: "Yep! Conditions, lololol. Wanna hear them? Trust me, you're not exactly in a position to lose anything here~"

So-jin twirled the key to the chastity device between her fingers, looking down at Juhwan with a gaze dripping with contempt.

Juhwan: "...Fine, let's hear it. I'll decide after I listen."

So-jin: "Pfft, lmaooo. Decide after you listen?"

So-jin: "And what if you hear it and don't like it? Then what do you do?"

So-jin: "You're just gonna sit there waiting forever until my unnie decides to unlock that thing on your dick? LOL"

So-jin: "PUHAHAHA!! LMAOOO oh my goddd you actually think she's going to unlock it?? Seriously??"

So-jin burst out laughing like a teenage girl, loud enough to send the hallway ringing. Tears welled up at the corners of her eyes, and she barely managed to catch her breath before going on, staring at Juhwan all the while.

So-jin: "Ay, lmao... haah... lmaooo are you naive, or just plain stupid?"

So-jin: "My unnie's been ghosting every single one of your calls, hasn't she?"

So-jin: "She never had any intention of unlocking your chastity device in the first place, lol."

So-jin: "Every guy who's ever messed with my unnie's feelings got trained the exact same way, you know. Lmaooo."

Juhwan: "...Then... what am I supposed to do to get it unlocked...?"

So-jin: "Hmm... simple, lol. You go to her, get on your knees, sign a slave contract~ and then, well... lmao."

So-jin: "You become her personal stud. Run her errands, wait on her hand and foot, live like that. Lol."

So-jin: "There's a whole truckload of guys who walked away from her like that, lol."

Juhwan just listened in silence. Then So-jin popped up from her seat, drew a little closer to him, and picked her explanation back up.

So-jin: "That's why I'm saying — ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠if you're going to suffer anyway, at least hear my conditions, lol."

So-jin: "Honestly, whatever my conditions turn out to be, they'll beat waiting for my unnie to unlock you herself by a mile, right?"

She wasn't wrong. Whatever conditions So-jin proposed would be the crux of it, sure — but going by her words alone, it seemed wise to abandon any hope that So-hee would ever free the chastity device binding Juhwan's ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠cock.

Juhwan: "......Let's hear it, then."

Wiggle, wiggle.

So-jin beckoned him with a crook of her finger. It meant: come closer. When Juhwan stepped nearer, she rose on her toes and whispered directly into his ear.

So-jin: "You, lol. Can you tell me what exactly your relationship with my unnie is?"

Juhwan: "...!!"

He hadn't expected her to come at him so bluntly. He froze, too flustered to say a word, and So-jin changed her question.

So-jin: "Ah, lol, never mind. Forget relationship — who cares about that, lmao. I already know all about it even without hearing it from you."

So-jin: "New question."

So-jin: "You, lol — just how amazing are you, that my unnie is floundering this bad over you?"

So-jin: "Me and my unnie always hung out together, you know."

So-jin: "We basically went to clubs together too, and whenever one of us spotted a guy we liked, we'd bet on who could seduce him first —"

So-jin: "and of all the men my unnie's actually been with, there are a shitload that I got to first, or got to later. Lol."

Hearing that, Juhwan suddenly thought: this girl's an absolute slut.

She was saying all this without a shred of hesitation in front of a man she'd just met. Like sister, like sister, apparently.

So-jin: "But here's the thing."

So-jin drew back from his ear and looked him dead in the eye.

So-jin: "My unnie, who's been through more men than she can count —

So-jin: "for some reason, with you, she seems to be flailing a little. Isn't that something?"

She crossed her arms, still standing, and continued.

So-jin: "So, lol, now I'm curious. That's all."

So-jin: "Just how incredible a piece of work you are, to have my unnie stumbling all over herself."

So-jin: "I mean, obviously you and my unnie have been screwing like crazy whenever my brother-in-law's away, right? I don't need to be told that much."

So-jin: "So I've made up my mind, lol. I figured — my unnie shouldn't get to hog you all to herself. Tasting you myself doesn't sound half bad~ lmao."

And that was the end of the long-winded preamble. Now So-jin's actual offer came out, point-blank.

So-jin: "You, hey, lol. I'll unlock you just this once, so make a bet with me."

So-jin: "We fuck, and the first one to surrender loses."

So-jin: "If you make me surrender first? Then I'll unlock your chastity device forever and become your personal cum-dump whenever you're horny."

So-jin: "But if I make you surrender first? That chastity device goes right back on that cock of yours —

So-jin: "and after that... we'll figure out the rest as we go, lol."

With those words, So-jin's body came into sharp focus for Juhwan all over again. Her curves could rival her sister's without breaking a sweat — and she was a full twelve years younger than So-hee.

Soo-hee's body was meticulously maintained too, its skin and firmness showing no trace of her age whatsoever, but So-jin was something else entirely: raw, unripe. If he had to sum her up in a single word, that would be it.

Truthfully, Juhwan had no room to answer any other way. If he refused, he'd never even glimpse the day the device came off his cock — just another stretch of that grimy, humiliating existence.

Juhwan: "...It's not like I've got any better options anyway..."

So-jin: "Lol... is it because you're a college student? Smart guy."

So-jin turned and started up the stairs, calling back over her shoulder.

So-jin: "Come on up, lol. Unnie's out right now."

And with that, she bounded up ahead of him, Juhwan trailing close behind like a puppy.

*So-hee's apartment*

He found himself perched on the edge of the bed in So-hee and her husband's master bedroom.

There was truly no one home. This was the apartment where Juhwan and So-hee had come and gone countless times while fucking — but today, something about the atmosphere felt different.

For one thing, he'd come here with So-jin, not So-hee. And with things between him and So-hee in a bit of a cold war at the moment, being back in her apartment now felt oddly alien.

So-jin, who had vanished into the kitchen, came back with a glass of water and walked up to him. No — not just the water. In her other hand, she was holding a small white pill.

So-jin: "Take it."

And with that, she held it out to him. Juhwan just stared blankly at it.

Juhwan: "...What is this?"

Juhwan: "You need to explain what it is. I'm not an idiot — you think I'm just going to swallow some random pill you shove at me out of nowhere?"

So-jin: "...Ugh..."

So-jin sighed and went on.

So-jin: "It's an antibiotic for men, you idiot..."

So-jin: "How many times have you fucked my unnie by now? My unnie's a slut who handpicks one guy after another whenever my brother-in-law's away, you know."

So-jin: "And you've been pounding her nonstop — for all you know, you could've caught something down there."

So-jin: "Can't I be the one to step up and eliminate that risk for you?"

Juhwan: "........"

Cornered by her logic, Juhwan hesitated for a long moment — and in the end, he took the white pill and the glass of water from So-jin's hand and swallowed it down.

Juhwan:Gulp.

The moment So-jin watched him swallow the pill, a strange, unreadable expression crept across her face.

Juhwan: "...Why are you staring at me like that?"

So-jin: "...Wow............. you are so fucking naive........."

Juhwan: "...What?"

So-jin: "AHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA"

So-jin let out a laugh so chilling it raised the hair on his arms. And then, suddenly, something strange began happening to Juhwan's body.

Exactly one minute after he'd swallowed the pill. One minute later, his body started to burn from the inside out.

Juhwan: "...F...fuck, what is this..."

Juhwan grabbed So-jin by the collar.

Juhwan: "You... you fucking bitch... what did you just make me take...!!"

Even with his fist knotted in her collar, So-jin just kept cackling, sneering up at him.

So-jin: "LMAOOOOO ahhh~~~ you gullible little bastard... lmao"

So-jin: "So this is why my unnie kept you around to play with~ you're such an easy mark, lmaooo."

Juhwan: "Khh—...!!"

The heat that had been spreading through Juhwan's body began pooling, concentrating, down in his groin. And against his every ounce of will, his cock started swelling grotesquely — until the chastity device he wore made the growing ache turn into pain.

So-jin: "Poor~ baby, lol. Want me to tell you what you just swallowed?"

So-jin: "That's an aphrodisiac, lmaooo."

So-jin: "You've had that chastity device on for two whole weeks, haven't you?"

So-jin: "Which means two weeks without even being able to jerk off. Pathetic, right? LOL"

So-jin: "Your first sex in two weeks — might as well do it properly, don't you think?♡"

With that, So-jin began stripping Juhwan's clothes off him herself. Once he was fully undressed, the chastity device locked around his cock made its pitiful debut.

So-jin: "Aww... T_T you poor thing, T_T it wants to get so big but it can't because of this thing... T_T"

Juhwan: "F...fuck... shut up and take it off...!!! It feels like it's going to burst!!!"

At the word burst, So-jin shot him a smirking, eye-smiling look — and then started peeling off her own clothes. A white bra, white panties — she left on just those two and stripped everything else away.

Juhwan: "...Fuck...!"

He couldn't hold back any longer. The aphrodisiac had already cranked his lust to its absolute ceiling — and now So-jin stood in front of him, her lush, heavy breasts bared to the air.

Juhwan crashed into her lips.

So-jin: "Mmph..!!"

He kissed her like a beast, one hand mauling and kneading her milky, cow-like tits without mercy.

Tongue tangled with tongue, and soon both their mouths were smeared and glistening with spit. So-jin finally wrenched herself free of the kiss and kept talking.

So-jin: "LMAOOO what do I do, T_T you already can't hold it in anymore?"

The chastity device was still locked around Juhwan's cock.

So-jin: "Mmm♡ now I am curious. Just how impressive is it, that my unnie played with it this hard, lol."

So-jin sank to her knees in front of him, right before the device. Then she picked up the key.

"Click."

At last, the chastity device came off.

The instant it did, Juhwan's cock began swelling like something possessed.

So-jin: "Holy shit♡ look at the size of it, LMAOOO no wonder unnie lost her mind over this thing♡"

So-jin: "Sniff sniff... god, that smell,♡ you haven't properly washed in two weeks, have you?"

As So-jin degraded him, she reached out and stroked his already engorged cock with her hand —

Juhwan: "Ugh...!!!!!!"

Pssshh!!

So-jin: "KYAA!"

He came without a single word of warning.

Juhwan had been forced into two weeks of celibacy — and now, on top of that, So-jin had fed him an aphrodisiac. His lust was crammed to its absolute maximum. Seeing her naked body, feeling just a few strokes of her hand — before he knew it, all that backed-up cum exploded out and splattered across So-jin's face.

So-jin: "Haah♡ holy shit, lmaooo you came already? Premature little bastard, aren't you? LOL"

Juhwan: "Shut the fuck up!! This is all your fault!!!"

So-jin began stroking his cock down again, slow and deliberate.

So-jin: "You haven't forgotten our bet, right? LOL♡ Well? Ready to surrender already?"

Juhwan: "F...fuck... no... I haven't surrendered yet...!"

Juhwan seized both of So-jin's pigtails in a hard grip.

So-jin: "!!!"

Then he drove his rock-hard cock straight into her mouth-pussy, thrusting wildly.

So-jin: "Mmph..!! Mmph-mmph-mmph!! Kkh!! Uuugh!!!!!"

So-jin's eyes flew wide open, her mouth-pussy and throat-pussy forced to take Juhwan's cock all the way in.

But Juhwan's body wasn't in its usual state either. As mentioned before — two weeks of forced abstinence, plus the aphrodisiac — meant his second climax arrived fast.

Juhwan: "Ugh... again... FUCK...!!!!!!"

Puuurshh!!!

The second load.

With his cock buried deep in her throat-pussy, he pumped everything he had straight down it.

So-jin: "Uuuuuuuuugh!!!!!!!!!♡♡♡♡"

Both of So-jin's eyes rolled back as her throat gulped down load after load of his seed. There was simply too much of it — her cheeks ballooned out, and what she couldn't swallow erupted back out of her mouth and spilled down her chin.

So-jin gagged it down gulp by gulp, finally pulling her mouth off his cock and —

So-jin: "Shiiiit, lmaooo, is that what two weeks of starving does to you? Even the volume of your cum is fucking insane, LOL"

So-jin: "But hey, isn't this a little unfair?

So-jin: "I haven't gotten to enjoy a single thing, and you've gotten off twice."

So-jin: "What do you think?♡"

This time it was So-jin who took the lead, working his cock over with her mouth-pussy, sucking him hard and hungry.

So-jin: "Mmph~ shluuurp~ shlop~ shlooouup~~♡♡♡♡♡♡"

Her oral technique was uncannily similar to So-hee's. Juhwan's cock, his cum, and So-jin's spit were smearing together into one filthy, glistening mess.

Then So-jin popped her mouth off his cock and spoke.

So-jin: "Hey, just out of curiosity, lol — this bet of ours. Do you really think you can win it?"

So-jin: "I mean... lmao, judging by your cock, you're bigger than most guys, I'll give you that♡

So-jin: "But here's the thing....."

So-jin rose from her knees, slid up against him, wrapped her arms around his neck, and murmured.

So-jin: "I'm not some easy bitch who surrenders at the drop of a hat♡

So-jin: "You see,♡ my body's been trained by my ex — a man whose tastes in ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠bed were fucking brutal."

So-jin pointed at the cigarette burn on her thigh as she looked at Juhwan.

So-jin: "And... it doesn't stop there♡

So-jin: "Right in front of my ex, I've been gang-fucked by guys I'd never even laid eyes on before...

So-jin: "Fists and liquor bottles have been forced into my pussy and my ass."

So-jin: "And............ my ex gave me electric torture too... lmao"

At the words electric torture, a chill shot down Juhwan's spine in an instant.

She really went through something like that?

Her perversions seemed every bit as twisted as her sister So-hee's — if anything, the depth of it went far beyond her sister's... didn't it?

So-jin: "LMAOOO look at that ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠face. What's the matter? Starting to think you picked the wrong opponent?

So-jin: "This body of mine has endured every one of those brutally hardcore plays, lol

So-jin: "And now... lmao... you really think a body like that is going to surrender to you so easily??"

So-jin: "Then... shall we get our little bet properly started now?♡♡♡"